oj.uz

Submission #996565

# Submission time Handle Problem Language Result Execution time Memory
996565 2024-06-10T19:39:46 Z makrav JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 11 ms 2660 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;

#define all(a) (a).begin(), (a).end()
#define sz(a) (int) a.size()
#define pb push_back
#define ff first
#define sc second
#define pii pair<int, int>
#define f(i, l, r) for (int i = (l); i < (r); i++)
#define double ld

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, k; 
    cin >> n >> k;
    string s; cin >> s;
    vector<int> posj, posi, pref(n + 1);
    for (int i = 0; i < n; i++) {
        pref[i + 1] = pref[i];
        if (s[i] == 'J') posj.push_back(i);
        else if (s[i] == 'I') posi.push_back(i);
        else {
            pref[i + 1]++;
        }
    }
    int ans = 1e9;
    int ind = -1;
    for (int i = 0; i < n; i++) {
        if (s[i] == 'J' && ind+k<sz(posj)) {
            ind++;
            int L = -1, R = sz(posi);
            while (R - L > 1) {
                int M = (L + R) / 2;
                if (M < (k - 1) || posi[M - k + 1] < posj[ind+k-1]) {
                    L = M;
                    continue;
                }
                int cntt = pref[posi[M - k + 1]] - pref[posj[ind+k-1]];
                if (cntt>=k)R=M;
                else L=M;
            }
            if (R < sz(posi)) ans = min(ans, n - 3 * k - i - (n - posi[R] - 1));
        }
    }
    cout << (ans == 1e9 ? -1 : ans) << '\n';

    return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 456 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 452 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 456 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 452 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 9 ms 2068 KB Output is correct
37 Correct 10 ms 2448 KB Output is correct
38 Correct 10 ms 2660 KB Output is correct
39 Correct 11 ms 2524 KB Output is correct
40 Correct 7 ms 2476 KB Output is correct
41 Correct 8 ms 2404 KB Output is correct
42 Correct 9 ms 2488 KB Output is correct
43 Correct 5 ms 1752 KB Output is correct
44 Correct 6 ms 1892 KB Output is correct
45 Correct 7 ms 2348 KB Output is correct
46 Correct 6 ms 2512 KB Output is correct
47 Correct 7 ms 2480 KB Output is correct
48 Correct 7 ms 2404 KB Output is correct
49 Correct 4 ms 1684 KB Output is correct
50 Correct 7 ms 2388 KB Output is correct
51 Correct 7 ms 2508 KB Output is correct
52 Correct 4 ms 2108 KB Output is correct
53 Correct 5 ms 2404 KB Output is correct
54 Correct 9 ms 2548 KB Output is correct
55 Correct 3 ms 2656 KB Output is correct
56 Correct 2 ms 2516 KB Output is correct